45432664728 has 96 divisors (see below), whose sum is σ = 124943179200. Its totient is φ = 13756754880.

The previous prime is 45432664703. The next prime is 45432664729. The reversal of 45432664728 is 82746623454.

It is a super-3 number, since 3×45432664728³ (a number of 33 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45432664729) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4231575 + ... + 4242297.

It is an arithmetic number, because the mean of its divisors is an integer number (1301491450).

Almost surely, 2^45432664728 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 45432664728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62471589600).

45432664728 is an abundant number, since it is smaller than the sum of its proper divisors (79510514472).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

45432664728 is a wasteful number, since it uses less digits than its factorization.

45432664728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12213 (or 12198 counting only the distinct ones).

The product of its digits is 7741440, while the sum is 51.

The spelling of 45432664728 in words is "forty-five billion, four hundred thirty-two million, six hundred sixty-four thousand, seven hundred twenty-eight".